發送短信 : Gain enhancement of slot array for base station using cavity of curved-woodpile metamaterial

 _    _    __   __   ______      ___     _    _   
| \  / ||  \ \\/ // |      \\   / _ \\  | || | || 
|  \/  ||   \ ` //  |  --  //  | / \ || | || | || 
| .  . ||    | ||   |  --  \\  | \_/ || | \\_/ || 
|_|\/|_||    |_||   |______//   \___//   \____//  
`-`  `-`     `-`'   `------`    `---`     `---`